Biogas is a mixture of gases (mainly methane) produced by the microbial activity and which may be used as fuel. During biogas production, the bacteria called methanogens digest the activated sludge and produce a mixture of gases such as methane, hydrogen sulphide, carbon dioxide and hydrogen.
During sewage treatment, biogases are produced, which include
NEET UG 2013 — Zoology Microbes in Human Welfare
2013mcqmedium
During sewage treatment, biogases are produced, which include
Official previous-year question
Held on 30 Apr 2013 · Verified 9 Jul 2026.
Options
- A
methane, hydrogen sulphide and carbon dioxide
- B
methane, oxygen and hydrogen sulphide
- C
hydrogen sulphide, methane and sulphur dioxide
- D
hydrogen sulphide, nitrogen and methane
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